EP1853142B1 - Vorrichtung zur herstellung eines getränks aus einer kapsel durch injektion einer druckflüssigkeit und dafür entwickelter kapselhalter - Google Patents

Vorrichtung zur herstellung eines getränks aus einer kapsel durch injektion einer druckflüssigkeit und dafür entwickelter kapselhalter Download PDF

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Publication number
EP1853142B1
EP1853142B1 EP06706613A EP06706613A EP1853142B1 EP 1853142 B1 EP1853142 B1 EP 1853142B1 EP 06706613 A EP06706613 A EP 06706613A EP 06706613 A EP06706613 A EP 06706613A EP 1853142 B1 EP1853142 B1 EP 1853142B1
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EP
European Patent Office
Prior art keywords
capsule
holder
fluid
fluid supply
injector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP06706613A
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English (en)
French (fr)
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EP1853142A1 (de
Inventor
Zenon Ioannis Mandralis
Alfred Yoakim
Jean-Paul Denisart
Jean-Luc Denisart
Hanspeter Pleisch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nestec SA
Original Assignee
Nestec SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from EP05100839A external-priority patent/EP1688072B1/de
Priority claimed from EP05105037A external-priority patent/EP1731063B1/de
Application filed by Nestec SA filed Critical Nestec SA
Priority to PL06706613T priority Critical patent/PL1853142T3/pl
Priority to EP06706613A priority patent/EP1853142B1/de
Publication of EP1853142A1 publication Critical patent/EP1853142A1/de
Application granted granted Critical
Publication of EP1853142B1 publication Critical patent/EP1853142B1/de
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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00—Apparatus for making beverages
    • A47J31/40—Beverage-making apparatus with dispensing means for adding a measured quantity of ingredients, e.g. coffee, water, sugar, cocoa, milk, tea
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00—Apparatus for making beverages
    • A47J31/06—Filters or strainers for coffee or tea makers ; Holders therefor
    • A47J31/0657—Filters or strainers for coffee or tea makers ; Holders therefor for brewing coffee under pressure, e.g. for espresso machines
    • A47J31/0668—Filters or strainers for coffee or tea makers ; Holders therefor for brewing coffee under pressure, e.g. for espresso machines specially adapted for cartridges
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00—Apparatus for making beverages
    • A47J31/06—Filters or strainers for coffee or tea makers ; Holders therefor
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00—Apparatus for making beverages
    • A47J31/44—Parts or details or accessories of beverage-making apparatus
    • A47J31/4403—Constructional details
    • A47J31/446—Filter holding means; Attachment of filters to beverage-making apparatus
    • A47J31/4467—Filter holding means; Attachment of filters to beverage-making apparatus by means of linear guides, e.g. drawer-type engagement

Definitions

  • the present invention relates to a device for preparing a liquid, in particular, a device using a capsule containing one or more food ingredients for the preparation of a liquid.
  • the invention also relates to a liquid dispenser using such a device.
  • the present invention also relates to a capsule-holder of such a device using a capsule containing one or more food ingredients for the preparation of a liquid.
  • capsules containing a substance for preparing a cold or hot drink by extraction or mixing with a pressurized fluid inserted into the capsule is known particularly for producing a coffee of the espresso type, filter coffee, cappuccino, latte, macchiato, tea or chocolate, and is of value, in particular, for reasons of hygiene, freshness, conservation of the ingredients and ease of use.
  • Different types of machines are used for preparing drinks from sealed or permeable capsules containing a substance to be extracted such as ground coffee or tea, or a substance to be dissolved or dispersed such as instant coffee, chocolate or milk or a mixture or a simple combination of these substances.
  • the fluid for the extraction or dissolving of the substance is injected into the capsule through a wall; the extract or mixture is then formed in the enclosure of the capsule and it then pours in the form of a drink through one or more orifices.
  • the injection may be carried out by an injector which pierces a membrane of the capsule or which inserts itself into a preformed inlet orifice of a wall of the capsule.
  • the drink pours out of the capsule when a certain pressure is reached in the enclosure of the capsule.
  • the capsule may thus interact with means used to delay the pouring, either opening means which open a wall of the capsule, for example reliefs against an outlet membrane, or else a filtering wall situated between the enclosure and the pouring orifice.
  • Patent Application WO 03/059778 relates to a capsule containing one or more ingredients which are opened by opening means engaging with means of holding back the drink under the effect of the pressure rise in the capsule.
  • a capsule has amongst other advantages: i) the possibility of distributing drinks of different natures "without cross-contamination", that is to say without a first distributed drink transmitting one or more undesired characteristics, such as a taste, colour and/or odour, to a second drink distributed after the first, ii) the flexibility of designing capsules better suited to the ingredients and products to be distributed, iii) a better control and repetitivity of the extraction or mixing conditions, iv) a significant simplification of the distribution machine.
  • a capsule containing a cappuccino mixture to be dissolved requires a larger volume, because the powdered milk that it contains takes up much more room than a capsule containing ground coffee for an espresso coffee, or else an instant coffee for a filter coffee.
  • an instant coffee or tea usually requires less storage space.
  • certain soluble products although not necessarily occupying a large volume, must nevertheless be dissolved in a gas-containing chamber of sufficient size in order to take on sufficient of this gas to create the froth.
  • the injection conditions considerably influence the quality of the drink produced.
  • a substance originating from a grinding process or a substance to be dissolved or dispersed in a liquid such as instant coffee or a milk-based substance such as cappuccino, chocolate or other, or else a substance to be infused such as tea
  • the manner in which the water is delivered and circulates in the capsule may have a considerable influence on the quality of the final drink produced.
  • the known devices are usually not designed to adapt or modify the conditions of injection according to the types of drinks to be produced.
  • Another disadvantage of the known devices arises from the fact that the injection means may rapidly become dirty and/or scaled and thus modify the characteristics of injection (like for example reducing the flow, increasing the pressure losses, modifying the direction of the jet, etc.) and therefore thus affect the quality and/or the attributes of the drink.
  • These means are rarely accessible to the user. The user therefore has difficulty diagnosing the cause of the problem and consequently has difficulty remedying it.
  • Patent Application EP 1 440 638 relates to a machine for the preparation of a drink using capsules; the machine comprising a first piercing element forming an inlet orifice and a second piercing element forming an outlet orifice; the orifices being formed during the use of the capsule; the two piercing elements being formed in a single removable unit. Such a configuration aims only to make the piercing elements easier to clean.
  • Patent Application WO 2004/0006740 relates to a coffee machine operating with doses which comprise a support having two indentations placed side by side to receive two different doses.
  • the indentations have annular bed-plates of different diameters, are offset in height, each corresponding to the dimensions of the flat bedplate surface of a dose. In this case, only two different capsule volume options are available.
  • Such a system is also relatively complex.
  • WO 97/43937 relates to an adaptator for prepacked coffee dose with a handle that defines a part of a percolating chamber suited to holding a dose of coffee; a lid associated to the dose-holder that defines a second part of the percolating chamber; the lid being suited to seal-lock with the lower part of a hot water distributor and bearing an aperture that connects the distributor to the percolating chamber.
  • a handle that defines a part of a percolating chamber suited to holding a dose of coffee
  • a lid associated to the dose-holder that defines a second part of the percolating chamber
  • the lid being suited to seal-lock with the lower part of a hot water distributor and bearing an aperture that connects the distributor to the percolating chamber.
  • the capsule holder is conceived to adapt to the water distributor via conventional closure means, such a bayonet type system, which involves a rotary mechanical tightening movement from the user. Such movement requires a certain strength of the user to be carried out and removal of the capsule holder might be difficult.
  • the fluid connections of small size such as small fluid inlets for a providing high pressure water jets in the capsule-holder cannot be associated precisely and without risk of leakage. Therefore, this principle is only adapted for connecting to a large fluid outlet of boilers.
  • the closure principle involves high torque that can affect the precision of the articulation of the lid and capsule holder. It may also affect the seal surfaces therefore providing rapid wear of the seal surfaces that needs to be compensated by more tightening.
  • EP 1092 376 relates to an espresso coffee machine comprising a capsule-holder with handle containing the coffee powder, adapted to be operatively connected to the boiler portion of the coffee machine. This device presents the same disadvantages as the previous one.
  • US-A-2003/0066431 relates to a coffee maker comprising a capsule holder which is removably holding a coffee grounds containing pod.
  • a coffee pod piercing system enables to pierce the pod when placed in position in the capsule holder.
  • the capsule holder is placed in a slidable drawer. Piercing of the pod is carried out by activating an actuatable selector on top of the machine.
  • EP1502528A1 relates to a brewing device including a filter support designed as a replaceable cassette which is movable across the axis of the brewing chamber between an insert position where the coffee pod is inserted or removed, and a pushed-in position.
  • the filter support has a first socket for a first number of filter pods and a second socket for a second number of filter pods.
  • US3260190 relates to a brewing coffee machine with a receptacle adapted to receive a can.
  • the receptacle comprises runners for being guided in the machine.
  • a lever mechanism mounted on the side of the machine enables to move a piercing plate down for piercing the upper side of the can.
  • US-A-2003/0071056 relates to a dispensing machine with a drawer, including a cartridge holder, which can slide along rails of the machine. A cartridge ejector is necessary to remove the cartridge from the cartridge holder.
  • one of the objects of the present invention is to remedy the disadvantages of the devices of the prior art.
  • One object is to propose a device that comprises a capsule-holder that is removable and can adapt to a fluid supply unit while providing more versatility/freedom in the injection mode (e.g., with possibility to create high pressure jet(s)), an improved precision of the seal connection, lower risks of wear and leakage and a facilitated handling.
  • Another object is to design a system that is better able to receive capsules of particular shapes, sizes and/or requiring particular injection configurations relating to the nature of the ingredients and/or the drinks to be produced.
  • Another object is to make it easier for the user to access the injection means, and to make it easier to clean and/or descale the injection means of the device.
  • the invention also aims at other objects and particularly the solution of other problems as will appear in the rest of the present description.
  • capsule means a discardable or recyclable package, container, sachet or receptacle that contains one or more ingredients and is flexible, partially rigid or totally rigid.
  • a preferred embodiment of a drink distributor or distribution machine 1 is illustrated in perspective which comprises a preparation device or module 2 according to the invention.
  • the device will be described in greater detail in the rest of the present description. It is connected to a frame 3 of the machine which comprises a water supply system, known per se, configured to supply the device with water under pressure comprising a water reservoir 30, such as a transparent jar, a pump and a water heater (not visible) inside the frame, a water inlet duct 31 connecting the pump and the water heater to the device 2.
  • the inlet of water into the device is controlled by an actuation system 32 comprising, for example, as known per se, a valve and a manually actuatable lever.
  • a main electricity supply control 38 is provided on the frame which is used to power up the machine and, for example, to begin if necessary the preheating of the water heater to preheat a volume of water.
  • the distribution machine has a distribution zone 33 suitable for receiving a receptacle.
  • the zone extends vertically between the preparation device 2 and a receptacle support 34 furnished for example with a drip tray 35 and a drain grid 36, both removable from the frame for cleaning.
  • the preparation device 2 comprises, on the one hand, a capsule-holder 4 and, on the other hand, a pressurized fluid supply unit 5.
  • the capsule-holder 4 is configured to be associated with the supply unit in removable manner according to the complementary engagement means that will be described in greater detail hereinafter.
  • the supply unit 5 is, for its part, attached to the frame of the machine both mechanically and in fluid communication. More precisely, the supply unit 5 is attached by mechanical connection means such as screws or other means, through connection axes 5a-5d.
  • the unit communicates with the pump and the water heater via the duct 31 which is connected to the fluid connector 50 positioned above the unit.
  • the fluid connector 50 may also comprise a back pressure valve 500 which keeps the duct closed below a minimal hydraulic pressure upstream of the valve.
  • the capsule-holder 4 is configured to receive a capsule 6.
  • the capsule-holder is furnished with a cup 40 with walls furnished with internal surfaces that preferably espouse the general shape of the capsule.
  • the matching of the capsule-holder to the shape of the capsule is visible in Figure 5 .
  • a capsule body 60 comprises external surfaces that complement the internal surfaces or housing 41 of the cup.
  • a type of capsule to deliver a particular drink may be associated with a capsule-holder of matching configuration. It is therefore easy, by modifying the size and/or the shape of the cup, to reject a capsule in the capsule-holder which is not then intended for such a capsule-holder. This can be used to control the standards, the features and/or the quality of the distributed products.
  • the cup itself could be removed if the body 60 of the capsule is sufficiently rigid, in which case, the capsule can be simply held on the upper edge of the capsule-holder.
  • the holding means could so become a support ring that bears the upper edge of the capsule.
  • the cup of the capsule-holder ends towards the bottom in a discharge opening 42 furnished with edges 420 configured to clear a pouring orifice 61 of the capsule.
  • this opening is configured in size to prevent its edges 420 from being soiled by the drink which flows through the capsule; this limits cleaning and reduces the risks of cross-contamination between two drinks.
  • the pouring orifice 61 extends preferably downwards substantially beyond the edges 420 of the cup so as to reduce the risk of the liquid contacting these edges.
  • the edges 420 may also be thinner than the walls of the rest of the cup 40.
  • the cup extends upwards via bearing edges 43 allowing the capsule 6 to rest by means of its lateral edges 62.
  • the capsule is thus held in the capsule-holder in a stable position with a transverse fluid inlet wall 63, unencumbered (not covered) towards the top.
  • the wall may be a membrane sealed on the edges for example or a semi-rigid wall connected to the body by other means.
  • the walls of the body 60 are typically made of a plastic material chosen from the set comprising EVOH, PVDC, PP, PE, PA in single- or multi-layer form.
  • the body 60 is hermetically sealed by the fluid inlet wall 63, for example, by means of a lid that is heat-sealed onto the edges of the body 60.
  • the lid is typically made of a material capable of being perforated by perforation means, in particular an injector, which will be described hereinafter.
  • the material of the lid 63 may for example be chosen from the set comprising aluminium, an aluminium/polymer composite, cellulose/aluminium/polymer, a pure single-layer or multi-layer polymer.
  • the capsule 6 preferably has its own opening means configured to allow the drink to pass through the pouring orifice 61 in a configuration in which the capsule is pressurized by the fluid injected into the latter.
  • the capsule comprises in its bottom part a thin film 65 sealed on an inner edge 650 of the body 60 of the capsule.
  • This film 64 is placed above a disc 66 comprising a plurality of elements in relief 67 spaced out on the surface of the disc and delimiting a plurality of channels 68 emerging at the periphery of the said disc.
  • the capsule-holder 4 and an injector 70 intended to inject the fluid under pressure into the capsule are linked together.
  • the injector may form part of the capsule-holder or be fitted in separable manner thereto.
  • the injector is the piece 70 which forms part of an injection system 7 comprising a support piece 71 of the injector 70 mounted rotatably on a side of the peripheral edge of the cup 40.
  • the piece 71 is mounted rotatably along the axis of articulation 72 connected to the side of the cup.
  • the side on which the support piece 71 is mounted is preferably that which comprises a handle 73 to facilitate both the grasping of the capsule-holder and the handling of the injection system on disengagement.
  • the support piece 71 may thus be moved into a disengaged position in which the injector 70 is disengaged from the opening of the cup ( Figure 3 ) to allow the insertion of a capsule into the cup. Then, the support piece is rotated into a position of engagement in which the injector engages in perforation of the capsule inlet wall ( Figure 4 ).
  • the injection system 7 has an elastic means such as at least one spring (not shown) and an actuation means 74 to move the support piece 71 and the injector that is fixedly attached to it against the force of the elastic means into the disengaged position to allow the insertion of the capsule.
  • the actuation means 74 may be a pawl which is manipulated with the thumb and engages in a recess 75 of the front part of the handle 73. Thus, when the pawl is not pushed down, the injection system is in the engagement position without the risk of the user being pricked.
  • the capsule-holder has lateral guide edges 44, 45 in the shape of rectilinear ribs extending, on the one hand, outwards and, on the other hand, in the direction of insertion of the capsule-holder into the supply unit. These edges extend along the opening of the cup 40 in order to provide a good seat for the capsule-holder in the insertion unit.
  • a shape recognition element or key 46 intended to engage in a complementary shape of the supply unit.
  • the injector comprises an inlet orifice 76 formed on the anterior face of an inlet portion or connector 77.
  • the inlet orifice should remain relatively small, preferably of less than 3 mm in diameter. A small orifice ensures a more precise, reliable, safer fluid connection and participates to diminish hot residual water when the capsule-holder is removed.
  • the inlet portion or connector 77 extends in relief over the top edge of the support piece 71 and is preferably frustoconical in shape.
  • the injector 70 is extended by a perforation portion 78 which ends in a blade or cutting surface 780 allowing the portion to be inserted by perforation through the inlet wall 63 and inside the capsule.
  • the portion also comprises one or more fluid outlet orifices 79 which are oriented in a manner suitable for distributing the fluid inside the capsule in one or more appropriate directions as shown in Figures 5 and 6 .
  • the inlet orifice 76 and the outlet orifice 79 are connected by an internal duct 750 which traverses the injector in the axial direction.
  • the internal duct of the injector may be dimensioned so that a capillary effect is generated to keep the fluid in the duct when the fluid pressure is stopped.
  • the advantage is to prevent the capsule from dripping when the capsule-holder is separated from the supply unit after extraction.
  • the fluid is thus kept in the duct by capillary attraction, which, in combination with the seal created between the injector and the capsule surface, prevents the air from entering the capsule and therefore prevents the fluid still contained in the capsule from pouring through the pouring orifice 61 of the capsule.
  • the duct preferably has a diameter of 0.7 mm or less, preferably lying between 0.4 and 0.6 mm and has a length of at least one 1 mm, preferably, at least 2 mm.
  • the point of injection and the direction of injection are preferably arranged at a distance from the centre of the capsule or of the cup 40 and the axis of the fluid outlet orifice is preferably oriented in a direction which passes away from the centre of the capsule or the cup 40.
  • the injection orifice 79 could be in the same axis as the rectilinear duct 750.
  • Such a configuration of the orifice 79 in the extension of the duct 750 may be advantageous for making the duct easier to clean, in the case of blocking or scaling, with a simple needle or other means.
  • the injector also comprises a sealed portion 781 which forms a zone of greater cross section than the perforation portion 78 which is adjacent to it.
  • the sealing portion can be made of softer material than the perforation material to serve as an external seal around the perforation made in the inlet wall 63 of the capsule. This may be an elastomer or silicone ring for example.
  • the advantage of such a device is that the seal is made on a small circumference around the perforation with the portion 781 which presses on the wall of the capsule sufficiently to provide this seal; this greatly simplifies the general design of the fluid supply in the capsule.
  • the seal thus produced around the perforation of the capsule is maintained when the capsule-holder is separated from the fluid supply unit; this has the effect, in combination with appropriate means provided in the injector to keep fluid in the injector and thus prevent the inlet of air, of preventing the capsule from dripping when the latter still contains a quantity of fluid.
  • Appropriate means may be a capillary duct inside the injector or else an anti-return valve which closes the inlet of the duct such as a slot valve, ball valve or needle valve.
  • the supply unit comprises a main guide and reception base 51 intended to receive the capsule-holder 4 in the unit - a position in which the injector is placed with reference to the fluid supply means of the supply unit.
  • the supply unit thus has a second part called the supply base 52 which actually supports the fluid supply means.
  • the guide base 51 and the supply base 52 are mounted articulated relative to one another so that the supply base and the guide base may adopt at least two relative positions: a position of disengagement between the injector 70 and the fluid supply means in which the fluid supply means is distant above the capsule-holder (particularly, above the injector) and a position of engagement between the injector 70 and the fluid supply means.
  • the guide base 51 is formed, more precisely, of a guide element in a transverse U-shape, 53, whose lateral sides have longitudinal guide ribs 530, 531 complementing the guide edges 44, 45 of the capsule-holder.
  • the guide element 53 terminates in a posterior transverse wall 532 serving as an abutment to the capsule-holder in its insertion position.
  • a bolt-shaped housing 533 to receive the key 46 ensures the definite correct engagement of the capsule-holder in the reference position.
  • the guide base and the supply base are articulated, on the one hand, by an articulation shaft 86 situated behind the said bases and, on the other hand, by a latching system (i.e., toggle joint system) 8 which comprises two wings 80, 81, mounted fixedly at the rear onto the frame via the articulation shafts 5a-5c.
  • the guide base 51 is thus mounted on the side wings 80, 81 by two side articulation shafts 800 allowing the guide base to pivot relative to the wings fixed to the frame.
  • the fluid supply base is also connected to each side of the wings by two articulations 82 guided into two arced oblong guide openings 83 made in the said wings 80, 81 of the latching system.
  • the guide openings 83 are configured so that, when the capsule-holder is brought manually downwards (direction O), the guide base 51 pivots relative to the wings 80, 81 about the shaft 800 and brings the supply base 52 which then closes on the guide base 51 in the direction represented by the arrow A since the shafts 82 are forced to guide into the openings 83 in the direction F.
  • the capsule-holder has referencing means in the form of two arc-shaped portions protruding on the bearing edge 43 which are configured to fit into complementary channels of the supply base 52. Therefore, for the supply base de close and the fluid connection to be performed properly, the capsule-holder must be inserted in along the side edges of the support base up to the reference position. If not sufficiently engaged, the supply base cannot be closed.
  • the referencing means can take many other equivalent forms, on the capsule-holder and/or fluid supply unit, as long as the referencing function can be achieved.
  • a reopening lever 87 can (optionally) also be provided to make the reopening of the supply unit easier.
  • the lever 87 is in the form of an inverted U-shaped yoke with two side legs 870, 871.
  • the legs 870, 871 are mounted pivotably on the shaft 88 on the top part of the wings 80, 81 and are guided along the articulations 82 into the openings 83.
  • the lever when the lever is activated manually in the direction of the arrow B, particularly downwards, the legs of the yoke pivot about the shaft 88 and bring the articulation 82 in the direction C, rearwards, which has the effect of bringing the supply base 52 upwards (direction D), hence reopening.
  • the articulation abuts in the opening, it is the guide base 51 that is brought upwards (direction D1) to return to the opening or insertion position of the capsule-holder.
  • the fluid supply means of the mobile supply base comprise a fluid connector 50 furnished with an internal duct 54 to transport the fluid to an outlet 55 placed in communication with the inlet orifice 76 of the injector.
  • the connector of the supply unit preferably terminates in a conical portion 56 forming a free cone-on-cone connection with the inlet portion 77 of the injector.
  • a seal 57 such as an O-ring, may be added to ensure a good seal of the connection.
  • the inlet portion could also be an inverted truncated portion into which can fit a protruding portion such as a portion of tube or truncated portion of the fluid supply means.
  • the truncated portion should be of small volume to reduce the amount of hot residual water when removing the capsule-holder.
  • FIGs 11 to 13 show another type of capsule-holder 4b according to the invention.
  • This capsule-holder 4b is designed to be inserted into the supply unit 5 thanks to the complementary engagement means 44, 45, 46 which remain identical to the previously described engagement means of the capsule-holder 4. The result is therefore that the capsule-holders 4, 4b are both interchangeable and removable from the supply unit 5.
  • the capsule-holders 4, 4b however have at least one specific feature that distinguishes them. This feature relates to:
  • the capsule-holder 4b is configured in terms of volume and injection method to receive more particularly capsules containing ingredients requiring a small storage volume and a wetting distributed over the cross section of the bed of substance.
  • the ingredients may be, for example, the grounds of, for example, coffee or tea.
  • the capsule-holder 4b thus comprises a cup 40b which defines an internal surface or housing 41b whose volume is smaller than the volume of the internal surface or housing 41 of the capsule-holder 4 previously described.
  • the depth Hb separating the internal bearing edge 69b from the top edge 43 is shorter than the same depth H of the capsule 4.
  • the capsule-holder receives capsules whose internal ration is thinner, which may be more appropriate for example for extracting espresso or filter coffees from a bed of ground coffee.
  • the capsule-holder 4 of Figure 5 has, for its part, a housing 41 whose depth H is greater so that it can receive capsules whose ration volume is greater, which may be more appropriate for storing a larger quantity of ingredients, such as milk powder, and/or for delivering larger volumes of drink, for example, between 110 and 500 ml of liquid.
  • the capsule-holder 4b comprises an injection system 7b operating according to the same principle of insertion into the capsule as the injection system 7 of the capsule 4 but nevertheless with an injector 70b with a different injection configuration.
  • the injector 70b has an outlet orifice 79b which differs in its shape and direction.
  • the shape and orientation of the outlet orifice are thus configured to distribute the fluid in a more dispersed manner, that is to say over a larger surface of the cross section, which improves the wetting of the ingredients and reduces the formation of undesirable preferential paths.
  • the shape of the orifice is preferably a slot partially and transversely intersecting the cylindrical portion of the injector.
  • the direction is also oriented more transversely in the capsule.
  • the capsule-holders are provided with features suited to the ingredients contained in the capsule and/or the preparation to be delivered.
  • the device therefore provides greater flexibility, ease of adaptation and the possibility of delivering a wider range of drinks or preparations including, for example, drinks such as espresso coffee, filter coffee, instant coffee, milk-based specialities such as cappuccino, latte or else tea, chocolate or else large volume refreshing drinks based on coffee, tea, milk, cocoa, fruit juice, or else special preparations containing nutritional ingredients, for example, product formulas for infants, for sports people, for the sick or for the aged.
  • drinks such as espresso coffee, filter coffee, instant coffee, milk-based specialities such as cappuccino, latte or else tea, chocolate or else large volume refreshing drinks based on coffee, tea, milk, cocoa, fruit juice, or else special preparations containing nutritional ingredients, for example, product formulas for infants, for sports people, for the sick or for the aged.
  • Figure 14 shows a different embodiment of a capsule-holder 4c comprising an injection system 7c that differs from the preceding method.
  • the injection system 7c comprises an injector 70c in the form of a wall or cover 71c furnished with a fluid manifold or collection chamber 710.
  • This manifold 710 distributes the fluid across a multitude of injection orifices 79c opening into the housing 41 of the capsule-holder.
  • Such a capsule-holder may receive a capsule comprising a top surface permeable to the fluid such as a filter paper, a woven or unwoven textile wall or a grille or simply a capsule open on this side.
  • the fluid is distributed, as in the injector of the preceding embodiments, through an inlet portion 77c, an internal duct 750c opening into the manifold.
  • the injector 70c is sealed from the capsule by means of a seal 740 located at the interface between the edge 710c of the injector and the edge 43 of the capsule-holder.
  • the seal 740 may form part of the injector itself and/or of the capsule-holder and/or of the capsule itself.
  • Such a capsule-holder may thus receive capsules furnished with filtering walls for example.
  • the capsules may be full flexible and furnished with filtering walls with a peripheral edge for clamping in the capsule-holder.
  • the injection system 7d comprises an injector 70d having the form of a central needle made in a plate or cover 71d which extends inside the housing 41 of the capsule-holder.
  • the needle distributes the fluid through injection orifices 79d made in the periphery of the needle.
  • the fluid originates from an inlet portion 77d, an internal duct 750d opening into a manifold 710d.
  • the other elements of the injection system remain similar to the other embodiments.
  • Such an arrangement allows the fluid to be distributed radially and at a desired depth in the housing.
  • the needle may be perforating or non-perforating depending on whether the capsule has a wall to be perforated or a wall furnished with an already preformed opening.
  • FIG 16 Another variant of the capsule-holder is illustrated in Figure 16 .
  • the capsule-holder 4e differs from the capsule-holder 4 of Figures 3-6 through certain modifications made to the injection system 7e.
  • the system comprises an injector 70e comprising an anti-return valve device.
  • a chamber 760 is provided in the injector by the assembly of a first top piece 761 and a second bottom piece 762 supporting the injection duct 763.
  • the chamber is sealed by an O-ring 764 covering the junction 765 of the assembly portion (for example, a screw thread) between the two pieces.
  • the chamber is closed off by a needle 766 which is pressed by an elastic element such as a helical spring (not shown).
  • the needle 766 When the pressurized fluid enters the chamber, the needle 766 is pushed back, which compresses the spring and opens the inlet 767 of the chamber to allow the fluid to pass through the duct 763 and therefore be inserted into the capsule 6.
  • Figure 17 shows the connection of the injector 70e in communication against the fluid supply unit 5.
  • the connector of the unit comprises a tubular element 500 made of deformable material which collapses, on simple pressure, against the external conical surface of the connection portion of the injector.
  • the tubular element is inserted into a recess 501 made at the end of the unit's supply duct.
  • the tubular element 500 delimits the fluid outlet 55 of the duct 54 of the unit. It presses on the conical or flared surfaces of the connection portion 77 of the injector and therefore serves both as a bearing and connection surface and as a seal.
  • Such an element may for example be an elastomer or silicone tube whose ends are straight (non-conical) or conical and compress on the connection surface of the injector.
  • the support piece 71 of the injector is mounted rotatably on an articulation shaft 72 mounted in an opening in order to provide a certain amplitude of vertical movement to allow the support piece a certain clearance in lateral tilting, so that the sealing zone of the injector is positioned more precisely against the inlet wall of the capsule.
  • the support piece is traversed by an oblong opening 720 that is vertically oriented and in which the cross shaft 72 for keeping the piece on the capsule-holder body can tilt. This ensures a better seal of the injection into the capsule.
  • the capsule-holder 4e also has a more ergonomic dish-shaped handle making it easier to hold.
  • the edge 420 of the discharge orifice 42 also has a bevelled cut-away to come away from the edge 610 of the said orifice 61 of the capsule in order to prevent contact with the pouring liquid and also to facilitate the discharge of liquid in the event of any contact with the latter.
  • FIGs 18 to 23 show another possible embodiment of the capsule-holder and the injector according to the invention.
  • the capsule-holder 4 of Figure 18 has the same elements as those of the previously described embodiments and the reference numbers are therefore identical to facilitate the identification of the latter.
  • the injection system comprises an actuation means 74 in the form of a pawl used to move the injector 70, from a position of injecting fluid into the capsule ( Figure 19 ) to a retracted position ( Figure 20 ).
  • the actuation means 74 moves the support piece or plate 71 on which the injector 70 of Figures 21 to 23 is mounted. The movement is made along the rotation shaft 72 situated at the rear of the cup 40 towards the front of the handle 73.
  • An elastic means 740 such as a leaf spring, puts up an elastic resistance to the actuation of the actuation means 74 in order to provide, in the absence of force on the elastic means, the return to the position of injection or of insertion of the injector into the cup.
  • the advantage is to ensure that the injector point is directed towards the cup, which limits the risks of pricking when the capsule-holder has no capsule in it.
  • the elastic means is thus a leaf connected to the actuation means and presses against the recess 75 of the handle. When the elastic means is actuated, the leaf is flexed and its radius of curvature diminishes as is shown in Figure 20 , which accentuates the return forces on the actuation means when the force of the user on the pawl is relaxed.
  • a rigid stepped portion 752 is also provided at the base of the injector to produce a seal by deformation of the upper foil of the capsule. The portion can be made integral with the support 71 by plastic injection and the like.
  • Figures 21 to 23 show a possible embodiment of the injector.
  • the injector has a nozzle 751 in which an internal duct is bored with a rectilinear axis 750 which extends from the inlet orifice 76 to the outlet orifice 79.
  • the outlet orifice 79 under pressure of the fluid is placed towards the bottom of the cup 40, substantially vertically. Maintenance of the duct is thus made easier. It is easier to unplug the duct when the latter is obstructed by solid particles (scale residues, coffee grains, etc.) than a duct having a bend or a variation of inclination.
  • the injector nozzle ends in a bevel-shaped cut-away surface 780.
  • a sealing means is provided such as a section enlargement in the form of an annular portion 752 ( Figure 19 ) made of elastic material, such as elastomer or silicone.
  • the annular portion may be flexible and in the shape of an inverted U or slightly concave to promote its adaptation to the capsule wall when the latter is swollen under the effect of the internal pressure.
  • the internal duct has at least one portion 781, of small cross section or diameter, performing a function of retaining the fluid in the injector by capillary attraction.
  • the duct is extended in the direction of the inlet orifice by a portion of larger diameter 782.
  • the small cross section internal duct ends in the outlet orifice 79, which also has the effect of producing a powerful jet of fluid into the capsule at the time of the injection. This jet causes a powerful mixing effect in the capsule and helps the soluble substances to dissolve rapidly and completely.
  • the size of the internal diameter of the capillary attraction section is less than 1 mm, preferably less than 0.7 mm, better still of the order of 0.6 to 0.4 mm.
  • the portion of greater diameter 782 downstream is used to ensure that the pressure loss caused by the injector, particularly the portion of reduced section, is not too great.
  • the total loss of pressure of the injector may be of the order of 2 to 5 bar approximately and the pump must be sufficiently powerful to overcome this pressure loss and send the fluid at a boost pressure of approximately 2 to 4 bar.
  • the pump of the supply unit must therefore be chosen to develop a static pressure lying between a minimum of 4 bar, preferably between 5 and 15 bar.
  • the air seal function caused by the capillary duct is important for preventing the problem of liquid drips or leaks which escape through the bottom of the capsule due to the ingress of air into the injector then into the capsule.
  • the portion 781 is therefore designed to remain full of liquid by capillary attraction when the capsule-holder is removed from the rest of the machine.
  • this capillary duct could be replaced by an anti-return valve or any equivalent means.
  • Figures 24 and 25 show an embodiment in which the injector nozzle is replaced by a simple connector 752 which ends in an orifice 79f.
  • the injector adjusts to the contact of the wall 63 facing an orifice 630 in the capsule. In this case, the orifice preexists and is not pierced by the injector.
  • the connector may be a cylindrical element or of any other shape.
  • the connector may be partially or totally made of elastomer serving as a seal.
  • the wall 63 of the capsule may be substantially deformed by the mechanical pressure exerted by the injection device, which ensures a better seal.
  • the cover is more rigid, therefore less deformable or not deformable at all and it is the connector that compresses against the wall to compensate for the clearances and make the seal.
  • both elements, wall 63 and connector 752 are deformable.
  • Figure 26 illustrates a further variant of the connection between a capsule-holder 4g and a fluid supply unit 5.
  • the connection is carried out by maintaining simple pressure applied by a protruding tubular portion 510 delimiting a fluid outlet 770 of the supply means into a recessed portion 770 of the injector system 7g that delimits a central fluid inlet orifice 76.
  • the necessary fluid tightness is so obtained between the capsule-holder and the fluid supply means by the surface of the tube contacting the surfaces of the recessed portion.
  • the recessed portion and the tube can have complementary trunconical shapes as illustrated to favour the tight contact along a larger surface area.
  • the recessed portion is formed in the support piece 71g of the injector such as by plastic injection or can be an extension of the injector 70g itself.
  • the tubular portion 510 can be made of a deformable resilient material to better match the surfaces of the recessed portion.
  • the trunconical form of the portion end 511 promotes a deflection of the surfaces of contact against the portion 770.
  • the recessed portion 770 is of a small volume with a larger width smaller than about 2 cm and a depth smaller than about 0.5 cm so that little residual water remains inside when the capsule-holder is disconnected from the fluid supply means.
  • the tubular portion 510 can be a removable or permanent piece that is inserted in or overmoulded to the upstream part of the fluid supply unit 5.
  • the tubular portion can be made of a resilient heat-resistant rubber elastomer or plastic and the rest of the unit of metal or hard plastic.
  • the injector 70g forms an internal conduit with a final capillary portion of reduced section relatively to the fluid inlet 55.
  • the invention is of course not limited to just the embodiments described.
  • other embodiments of equivalent capsule-holders can be envisaged depending on the type of capsule or the type of drink to be prepared.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Apparatus For Making Beverages (AREA)
  • Devices For Dispensing Beverages (AREA)
  • Non-Alcoholic Beverages (AREA)

Claims (14)

  1. Vorrichtung zur Zubereitung eines Getränks aus einer Nahrungsmittelsubstanz, die in einer Kapsel (6) enthalten ist, mit:
    - einer Flüssigkeitszufuhreinheit (5), die eine Flüssigkeitszufuhreinrichtung (50, 54, 55, 56, 500) aufweist,
    - einem Kapselhalter (4), der so gestaltet ist, dass er eine Kapsel (6) aufnehmen kann; wobei der Kapselhalter aus der Flüssigkeitszufuhreinheit entnehmbar ist;
    - komplementären Ineinandergreifmitteln (44, 45, 46; 53, 530, 531, 533) der Flüssigkeitszufuhreinheit und des Kapselhalters;
    wobei die komplementären Ineinandergreifmittel (44, 45, 46; 53, 530, 531, 533) so gestaltet sind, dass sie die Einführung des Kapselhalters in die Flüssigkeitszufuhreinheit entlang einer ersten Einführungsrichtung gestatten, in der der Kapselhalter in der Flüssigkeitszufuhreinheit in einer Referenzposition bereitgelegt wird, in der die Flüssigkeitszufuhrmittel relativ weit weg von dem Kapselhalter sind;
    wobei die Flüssigkeitszufuhreinheit (5) außerdem eine Schließeinrichtung (51, 52, 80, 81, 82, 83, 86, 87, 88) aufweist, die so gestaltet ist, dass sie die Flüssigkeitszufuhreinrichtung (50, 54, 55, 56, 500) relativ näher an den Kapselhalter auf eine Art und Weise bewegt, dass die Flüssigkeitszufuhreinrichtung (50, 54,55, 56, 500) in der Flüssigkeitsausgabeposition angeordnet wird, um in der Lage zu sein, Flüssigkeit in die Kapsel auszugeben,
    dadurch gekennzeichnet, dass die Schließeinrichtung (51, 52, 80, 81, 82, 83, 86, 87, 88) der Flüssigkeitszufuhreinheit so gestaltet ist, dass sie die Flüssigkeitszufuhreinrichtung (50, 54, 55, 56, 500) relativ näher an den Kapselhalter (4) in die Flüssigkeitsausgabeposition durch die Wirkung einer auf den Kapselhalter ausgeübten Kraft bringen kann.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Schließeinrichtung (51, 52, 80, 81, 82, 83, 86, 87, 88) der Flüssigkeitszufuhreinheit so gestaltet ist, dass sie die Flüssigkeitszufuhreinrichtung (50, 54, 55, 56, 500) näher an den Kapselhalter (4) in einer Richtung bringen kann, die von einer gradlinigen Einführungsrichtung des Kapselhalters in der Referenzposition verschieden ist.
  3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die Schließeinrichtung (51, 52, 80, 81, 82, 83, 86, 87, 88) der Flüssigkeitszufuhreinheit so gestaltet ist, dass sie die Flüssigkeitszufuhreinrichtung (50, 54, 55, 56, 500) relativ näher an den Kapselhalter in die Flüssigkeitsauswählposition durch die Wirkung einer Kraft bringen kann, die nach unten gerichtet ist.
  4. Vorrichtung nach irgendeinem der Ansprüche 1 bis 3, dadurch gekennzeichnet dass,
    die komplementären Mittel des Ineinandergreifens des Kapselhalters (4) und der Flüssigkeitszufuhreinheit (5) eine komplementäre Gruppe von Führungskanten und Führungsrippen (44, 45; 530, 531) aufweisen, die die Einführung des Kapselhalters durch Einschieben desselben in die Flüssigkeitszufuhreinheit gestatten.
  5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die Flüssigkeitszufuhreinheit (5) umfasst:
    ein Führungsunterteil (51), in das der Kapselhalter (4) durch eine Gleitbewegung entlang der Führungskanten (530, 531) eingeführt wird;
    ein Flüssigkeitszufuhrunterteil (52), das die Flüssigkeitszufuhreinrichtung (50, 54, 55, 56, 500) abstützt und einen Flüssigkeitsauslass (56) aufweist;
    wobei das Flüssigkeitszufuhrunterteil (52) an dem Führungsunterteil (51) angelenkt und relativ dazu aus der entfernten Position in die Flüssigkeitsausgabeposition der Flüssigkeitszufuhreinrichtung (50, 54, 55, 56, 500) in der Kapsel bewegbar ist.
  6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass das Flüssigkeitszufuhrunterteil (52) an dem Führungsunterteil (51) durch ein Kniehebelsystem angelenkt ist, so dass ein Druck auf dem Kapselhalter in einer bevorzugten Richtung, die von der Einführungsrichtung verschieden ist, das Zufuhrunterteil (52) dazu bringt, in der Flüssigkeitsausgabeposition relativ zu dem Führungsunterteil (51) zu schließen.
  7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass das Kniehebelsystem (8) zwei Flügel (80, 81) aufweist, die an zwei Seitengelenkwellen (800) des Führungsunterteils angebracht sind, und wobei die Flügel auch durch zwei Gelenke (82) an dem Zufuhrunterteil (52) durch zwei gebogene längliche Führungsöffnungen (83), die in den Flügeln (80, 81) gebildet sind, angebracht sind; wodurch das Führungsunterteil relativ zu den Flügeln (80, 81) um die Wellen (800) drehbar ist, wenn der Kapselhalter manuell nach unten gebracht wird, und das Zufuhrunterteil (52) nach unten bringt, das dann auf dem Führungsunterteil (51) schließt.
  8. Vorrichtung nach irgendeinem der Ansprüche, dadurch gekennzeichnet, dass der Kapselhalter einen Flüssigkeitsinjektor (70) zum Einführen von Flüssigkeit in die Kapsel aufweist.
  9. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass die Schließeinrichtung (51, 52, 80, 81, 82, 83, 86, 87, 88) der Flüssigkeitszufuhreinheit so gestaltet ist, dass sie die Flüssigkeitszufuhreinrichtung (50, 54, 55, 56, 500) in Dichtungseingriff relativ zu dem Flüssigkeitsinjektor (70) des Kapselhalters in der Flüssigkeitsausgabeposition bringen kann.
  10. Vorrichtung nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass der Injektor (70, 70b, 70c, 70d, 70e, 70f) eine Flüssigkeitseinlassöffnung (76, 77d, 77c, 767), einen Einspritzkanal (750, 750c, 750d, 750f, 710) und mindestens eine Einspritzöffnung (79, 79b, 79c, 79d, 79f) zum Einspritzen von mindestens einem Flüssigkeitsdruckstrahl in die Kapsel (6) aufweist.
  11. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, dass der Injektor (70, 70e) eine Düse (751) aufweist, die eine Wand (63) der Kapsel durchstößt, abschneidet oder sich durch die Wand (63) der Kapsel einführt.
  12. Vorrichtung nach Anspruch 11, dadurch gekennzeichnet, dass der Injektor (70, 70e) eine Dichtungseinrichtung an der Basis der Düse (751) oder des Verbinders (752) aufweist, um eine Dichtung zwischen der Düse oder dem Verbinder und der Wand (63) der Kapsel zu schaffen oder dazu beizutragen, eine Dichtungwirkung an der Oberfläche der Kapsel zu schaffen.
  13. Vorrichtung nach Anspruch 12, dadurch gekennzeichnet, dass die Dichtungseinrichtung ein elastisches Dichtungselement (752) ist.
  14. Vorrichtung nach Anspruch 12, dadurch gekennzeichnet, dass die Dichtungseinrichtung ein starrer stufenförmiger Teil um die Basis des Teiles des Injektors herum ist, der sich in die Kapsel einführt; wobei der Teil wirksam ist, um einen Eindruck auf der Oberfläche der Kapsel zu schaffen.
EP06706613A 2005-02-07 2006-02-03 Vorrichtung zur herstellung eines getränks aus einer kapsel durch injektion einer druckflüssigkeit und dafür entwickelter kapselhalter Active EP1853142B1 (de)

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PL06706613T PL1853142T3 (pl) 2005-02-07 2006-02-03 Urządzenie do przyrządzania napoju z kapsuły poprzez wtryskiwanie płynu pod zwiększonym ciśnieniem i przystosowany do niego uchwyt kapsuły
EP06706613A EP1853142B1 (de) 2005-02-07 2006-02-03 Vorrichtung zur herstellung eines getränks aus einer kapsel durch injektion einer druckflüssigkeit und dafür entwickelter kapselhalter

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EP05100839A EP1688072B1 (de) 2005-02-07 2005-02-07 Vorrichtung zur Herstellung eines Getränks aus einer Kapsel durch Einspritzen einer unter Druck stehenden Flüssigkeit
EP05105037A EP1731063B1 (de) 2005-06-09 2005-06-09 Kapselhalterung für eine Vorrichtung zur Bereitung eines Getränkes mit einer Kapsel durch Einspritzen von unter Druck stehender Flüssigkeit
PCT/EP2006/000944 WO2006082064A1 (en) 2005-02-07 2006-02-03 Device for preparing a drink from a capsule by injection of a pressurized fluid and capsule-holder adapted therefore
EP06706613A EP1853142B1 (de) 2005-02-07 2006-02-03 Vorrichtung zur herstellung eines getränks aus einer kapsel durch injektion einer druckflüssigkeit und dafür entwickelter kapselhalter

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EP1853142B1 true EP1853142B1 (de) 2009-04-22

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AU (1) AU2006210110B2 (de)
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US20070272084A1 (en) 2007-11-29
JP2008529570A (ja) 2008-08-07
KR101350069B1 (ko) 2014-01-14
WO2006082064A1 (en) 2006-08-10
EP1853142A1 (de) 2007-11-14
HUP0700822A2 (hu) 2008-04-28
PL1853142T3 (pl) 2009-09-30
CA2596946C (en) 2010-12-21
ATE429165T1 (de) 2009-05-15
RU2384289C2 (ru) 2010-03-20
PT1853142E (pt) 2009-05-05
HUP0700822A3 (en) 2011-02-28
CA2596946A1 (en) 2006-08-10
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AU2006210110B2 (en) 2012-04-19
NO20074455L (no) 2007-08-31
DK1853142T3 (da) 2009-07-27
KR20070110020A (ko) 2007-11-15
MX2007009508A (es) 2007-09-19
RU2007133502A (ru) 2009-03-20
TWI374721B (en) 2012-10-21
JP2011015977A (ja) 2011-01-27
MY142146A (en) 2010-09-30
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